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Finding the Fourth Proportional to 334.42, 500.91 and 316.45

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Solution

The fourth proportional to 334.42, 500.91 and 316.45 is: 473.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    334.42 : 500.91 = 316.45 : x
  2. Step 2: Convert to fraction form
    334.42/500.91 = 316.45/x
  3. Step 3: Cross multiply
    334.42x = 500.91 × 316.45
  4. Step 4: Simplify right side
    334.42x = 158,512.97
  5. Step 5: Solve for x
    x = 158,512.97/334.42
  6. Step 6: Final answer
    x = 473.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.